大约有 4,500 项符合查询结果(耗时:0.0327秒) [XML]

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Getting and removing the first character of a string

I would like to do some 2-dimensional walks using strings of characters by assigning different values to each character. I was planning to 'pop' the first character of a string, use it, and repeat for the rest of the string. ...
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Why does this code using random strings print “hello world”?

The following print statement would print "hello world". Could anyone explain this? 15 Answers ...
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Delete all records in a table of MYSQL in phpMyAdmin

I use wampserver 2.2. When I want to delete all records of a table in phpMyAdmin (select all) it deletes only one record not all records. Why it does not delete all records? ...
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How to find the nearest parent of a Git branch?

Let's say I have the following local repository with a commit tree like this: 20 Answers ...
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C++ STL Vectors: Get iterator from index?

So, I wrote a bunch of code that accesses elements in an stl vector by index[], but now I need to copy just a chunk of the vector. It looks like vector.insert(pos, first, last) is the function I want... except I only have first and last as ints. Is there any nice way I can get an iterator to these...
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How to set up a cron job to run an executable every hour?

I need to set up a cron job that runs an executable compiled using gcc once every hour. 7 Answers ...
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List to array conversion to use ravel() function

I have a list in python and I want to convert it to an array to be able to use ravel() function. 6 Answers ...
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How can I find the version of the Fedora I use?

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Matplotlib scatterplot; colour as a function of a third variable

I want to make a scatterplot (using matplotlib) where the points are shaded according to a third variable. I've got very close with this: ...
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Actual meaning of 'shell=True' in subprocess

I am calling different processes with the subprocess module. However, I have a question. 5 Answers ...